Tifa's CP Library

src/util/strip/lib.hpp

View this file on GitHub
Last update: 2026-05-21 12:41:07+08:00
Include: #include "src/util/strip/lib.hpp"

Depends on

src/util/util/lib.hpp

Required by

Verified with

Code

#pragma once

#include "../util/lib.hpp"

namespace tifa_libs {

// pred(x) == true  ==>  drop
template <common_range R, class F>
CEXP auto lstrip_view(R CR range, F&& pred) NE {
  auto v = range | views::drop_while(std::forward<F>(pred));
  return subrange{begin(v), end(v)};
}
// pred(x) == true  ==>  drop
template <common_range R, class F>
CEXP auto rstrip_view(R CR range, F&& pred) NE {
  auto v = range | views::reverse | views::drop_while(std::forward<F>(pred));
  return subrange{end(v).base(), begin(v).base()};
}
// pred(x) == true  ==>  drop
template <common_range R, class F>
CEXP auto strip_view(R CR range, F&& pred) NE {
  auto v = range | views::drop_while(std::forward<F>(pred)) | views::reverse | views::drop_while(std::forward<F>(pred));
  return subrange{end(v).base(), begin(v).base()};
}

}  // namespace tifa_libs

#line 2 "src/util/strip/lib.hpp"

#line 2 "src/util/util/lib.hpp"
// https://github.com/Tiphereth-A/CP-lib
#include <bits/extc++.h>
// clang-format off
namespace tifa_libs {

#define CEXP constexpr
#define CEXPE constexpr explicit
#define CR const&
#define CP const*
#define PC *const
#define CPC const*const
#define TPN typename
#define NE noexcept
#define CNE const noexcept
#define ND [[nodiscard]]
#define cT_(...) std::conditional_t<sizeof(__VA_ARGS__) <= sizeof(size_t) * 2, __VA_ARGS__, __VA_ARGS__ CR>
// NOLINTNEXTLINE(misc-const-correctness)
#define flt_(T, i, l, r, ...) for (T i = (l), i##e = (r)__VA_OPT__(, ) __VA_ARGS__; i < i##e; ++i)
#define retif_(cond, if_true, ...) if cond return if_true __VA_OPT__(; else return __VA_ARGS__)
#ifdef ONLINE_JUDGE
#undef assert
#define assert(x) 42
#endif

using namespace std::ranges;
using namespace std::literals;

template <class T>
CEXP T abs(T x) NE { retif_((x < 0), -x, x); }

}  // namespace tifa_libs
// clang-format on
#line 4 "src/util/strip/lib.hpp"

namespace tifa_libs {

// pred(x) == true  ==>  drop
template <common_range R, class F>
CEXP auto lstrip_view(R CR range, F&& pred) NE {
  auto v = range | views::drop_while(std::forward<F>(pred));
  return subrange{begin(v), end(v)};
}
// pred(x) == true  ==>  drop
template <common_range R, class F>
CEXP auto rstrip_view(R CR range, F&& pred) NE {
  auto v = range | views::reverse | views::drop_while(std::forward<F>(pred));
  return subrange{end(v).base(), begin(v).base()};
}
// pred(x) == true  ==>  drop
template <common_range R, class F>
CEXP auto strip_view(R CR range, F&& pred) NE {
  auto v = range | views::drop_while(std::forward<F>(pred)) | views::reverse | views::drop_while(std::forward<F>(pred));
  return subrange{end(v).base(), begin(v).base()};
}

}  // namespace tifa_libs

This site is open source. Improve this page.